This article covers the basic nvm commands that you can use to install and manage multiple versions of Node.JS. In fact, Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient, perfect for data-intensive real-time applications that run across distributed devices.
You can use the following command to list installed version's of Node for the current user:
$ nvm ls
With this command you can find available Node.js version for the installation:
$ nvm ls-remote
To find the default Node version set for the current user, run the command:
$ nvm run default --version